1Kernel driver vexpress 2====================== 3 4Supported systems: 5 6 * ARM Ltd. Versatile Express platform 7 8 Prefix: 'vexpress' 9 10 Datasheets: 11 12 * "Hardware Description" sections of the Technical Reference Manuals 13 for the Versatile Express boards: 14 15 - http://infocenter.arm.com/help/topic/com.arm.doc.subset.boards.express/index.html 16 17 * Section "4.4.14. System Configuration registers" of the V2M-P1 TRM: 18 19 - http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0447-/index.html 20 21Author: Pawel Moll 22 23Description 24----------- 25 26Versatile Express platform (http://www.arm.com/versatileexpress/) is a 27reference & prototyping system for ARM Ltd. processors. It can be set up 28from a wide range of boards, each of them containing (apart of the main 29chip/FPGA) a number of microcontrollers responsible for platform 30configuration and control. These microcontrollers can also monitor the 31board and its environment by a number of internal and external sensors, 32providing information about power lines voltages and currents, board 33temperature and power usage. Some of them also calculate consumed energy 34and provide a cumulative use counter. 35 36The configuration devices are _not_ memory mapped and must be accessed 37via a custom interface, abstracted by the "vexpress_config" API. 38 39As these devices are non-discoverable, they must be described in a Device 40Tree passed to the kernel. Details of the DT binding for them can be found 41in Documentation/devicetree/bindings/hwmon/vexpress.txt. 42